Get a list of Observation objects.

### Available end points:

- `/observations/` - Will list all Results in the database
- `/observations.json` - Will return all Results in json format. This can
also be achieved by using the accept header. `application/json`
- `/observations/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `status`
- `result_field`
- `discoveryKeywords`
- `updateFrequency`
- `nonGeographicFlag`
- `publicationState`
- `permissions`

### How to use filters:

These filters can be used like django query filters using __ for related model relationships.

- `/observations/?uuid=d594d53df2612bbd89c2e0e770b5c1a0`
- `/observations/?status=completed`
- `/observations/?results_field__dataPath__startswith=/neodc/esacci`
- `/observations/?discoveryKeywords__name=ESACCI`
- `/observations/?nonGeographicFlag=True`

Filters can be stacked to build an 'AND' relationship. E.g.

- `/observations/?publicationState__in=published,citable&nonGeographicFlag=True`
- `/observations/?publicationState__in=published,citable&discoveryKeyword__name=NDGO0003`

GET /api/v2/observations/38099/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 38099,
    "uuid": "605bdfe77b0a4c7493c0477f5a95fc0a",
    "title": "CALIOP and OMPS-LP satellite retrievals of the aerosol extinction coefficient for the Australian wildfires stratospheric impact study, Southern Hemisphere Data Set 2020",
    "abstract": "This dataset contains zonally averaged data from NASA's Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) and NASA's Ozone Mapping and Profiler Suite -Limb Profiler (OMPS-LP) satellite retrievals of the aerosol extinction coefficient and ozone anomalies during 2020.  These data were used for the experiments of Damany-Pearce et al. in the publication \"Australian Wildfires cause the largest stratospheric warming since Pinatubo and extends the lifetime of the Antarctic ozone hole\" 2022.  \r\n\r\nThe ozone anomalies are given at monthly intervals, throughout all of 2020, at 1˚ latitude bands over the whole Southern Hemisphere, based on OMPS-LP retrievals. The aerosol extinction coefficient anomalies are given at weekly intervals, from 2020-12-29 through to the end of 2020, at 10˚ latitude bands from 20˚S to 70˚S. These are given as a combined dataset based off both CALIOP and OMPS-LP retrievals, the full details of how the retrievals were combined and all anomalies were calculated is outlined in Damany-Pearce et al., (2020). NetCDF files of the total uncertainty in both the CALIOP and OMPS-LP retrieved aerosol extinction coefficient anomalies are also included.\r\n\r\nThe dataset also includes 8 files that would be needed to reproduce the experiments of Damany-Pearce et al. (2022) on the (UK Earth System Model) UKESM1 platform, these are the satellite retrievals of aerosol extinction coefficient and ozone anomalies, that have been converted into the input required by UKESM1 and full descriptions of these are provided in the readme.txt file.",
    "keywords": "SASSO, NE/S00212X/1",
    "publicationState": "published",
    "dataPublishedTime": "2022-09-30T11:18:45",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/38100/?format=api",
        "dataPath": "/badc/deposited2022/sasso_aus_wildfires_stratosphere",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 1521084402,
        "numberOfFiles": 15,
        "fileFormat": "Data are NetCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/10502/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/3617/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/1633/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7026/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7028/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9042/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21576/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21990/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22196/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49983/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49984/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49985/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49986/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49988/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49990/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49991/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49992/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49993/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49994/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49995/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49996/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49997/?format=api"
    ],
    "dataLineage": "These data were downloads of CALIOP and OMPS-LP satellite retrievals that have been zonally averaged and placed into subsets and then converted into the products required as input by the UKESM1 model by the project team.  Data were then uploaded to CEDA for archival",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/38101/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181535/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181536/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181537/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181540/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181545/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181546/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/181553/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/38108/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}